HUAXIA TOWER CRANE QTZ31.5(315B)

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Thank you for choosing the product of Huaxia Group. Please read the Brief Introduction carefully to know the tower crane well.

The tower crane is a hydraulic tower crane with swing top, horizontal jib and mobile trolley. It has the hoisting moment for315Kn.m;the maximum hoisting load of 3t and the maximum working radius of 39m.The hoisting height of anchoring tower crane is 25m and that of climbing tower crane is 100m.

The tower crane has ingenious design, beautiful shape and simple structure .It is easy to operate and maintain, and is safe and at a reasonable price .It is an ideal construction machines for construction enterprises. It has hoisting mechanism, swing mechanism, top-rising mechanism and radius mechanism, which can work individually or cooperatively to make a high efficiency. The top-rising mechanism is used to raise or lower tower. The hoisting mechanism has 3-speed electronic motor respectively for high, medium and slow hoisting speeds. It has flexible swing mechanism and radius mechanism and slewing mechanism for vertical and /or horizontal transportation of building materials in one time.

The tower crane has complete and sensitive protection devices such as hoisting weight limiter, hoisting moment limiter, hoisting height limiter, radius limiter and swing limiter to ensure of regular operation. It also has rest platform, guardrail and other protection devices. Driver’s cab is at a side of rib and has big space and wide visual field.

The tower crane has excellent performance and is suitable for hoisting in short civil or industrial buildings or loading or unloading in ports or goods yards

The products of Huaxia Group are your best choices of construction machines.

3 Main technical Parameters

Name

Unit

Index

QTZ31.5

Nominal hoisting moment

kN.m

315

Max. hoisting weight

t

3

Rated hoisting weight at jib nose

t

0.734

Working radius

m

2.5~39

Height

Independent

m

25

Attached

m

100

Hoisting

Speed

Ratio.

2

Hoisting

speed

m/min

42/21/7

Swing speed

r/min

0.45/0.7

Radius speed

m/min

33

Top-hoisting speed

m/min

0.7

Weight(independent)

t

19.5(21)

Ballast weight

t

5

Max. swing radii

m

39.75

rear swing radii

m

10.37

Max. working wind speed

m/s

20

Max wind speed for top rising

m/s

13

Working temperature

-20~40

4 Technical Parameters of Main Parts

Name

index

hoisting structure

Electric

motor

model

YZS200L1-4/8/24

power

kW

15/15/4

Rotating speed

r/min

1440/730/220

Decelerating motor

model

JZQ400

Central distance

mm

400

ratio

15.75

Arrester

model

YWZ-200/25

Braking moment

N.m

200

Hydraulic propeller

YT1-25

Steel wire

6*19-12.5-1670-I-right twisted

swing mechanism

Epicyclical reducer

model

XX4-63

Reducing ratio

195

fluid coupling

YOX-220A

Slewing ring

011.32.1120

Electric

motor

model

YD112M-6/4  B5

Power

kW

2.2/2.8

Rotating speed

r/min

950/1440

radius changing mechanism

Electric

motor

model

Y100l2-4

Power

kW

3

Rotating speed

r/min

1430

reducer

model

WCJ-120

Reducing ratio

38

Steel wire

6*19-6.2-1570-I-right twisted

Lifting mechanism

Electric

motor

model

Y100L2-4  B5

power

kW

3

Rotating speed

r/min

1430

Hydraulic oil cylinder

HSGK-125/90-1320

Rating pressure

MPa

16

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- Inquire about price/MOQ

Q:How much is a team of 40 tower crane
Tower crane rental generally do not rent pricing, can not count number, not today is installed, removed tomorrow!Usually on a monthly basis, with or without use!
Q:How often should the crane be inspected regularly?
Crane safety supervision regulations twenty-fourth in lifting machinery safety regular supervision and inspection cycle for two years, elevator and manned elevator safety regular supervision, inspection cycle for a year.Eighteenth lifting machines should check the lifting machines regularly, including annual inspection, monthly inspection and daily inspection:I. at least one full inspection shall be carried out annually on the lifting machinery used.The load test can be carried out by lifting the heavy load which is equivalent to the lifting weight, and checking the safety performance of the mechanism such as lifting, running, turning and amplitude according to the rated speed.Lifting machines which have not been used for more than one year should be examined comprehensively before use.Crane in case of four or more earthquakes or major equipment accidents, outdoor work crane after more than nine winds, should be used before a comprehensive inspection.
Q:How to select tower crane type according to the height of building? Seek explanation
The building cornice height within 20m, the building area of each floor within 2000m2 with 800KN.m tower crane 1 units, each increase of less than 1600m2 800KN.m 1 tower cranes;The building cornice height is less than 50m, the building area of each floor within 2500m2 with 1000KN.m self lifting tower crane 1 units, each increase of less than 2000m2 increased 1 1000KN.m self lifting tower crane;The building cornice height is less than 100m, the building area of each floor within 3000m2 with 1500KN.m self lifting tower crane 1 units, each increase of less than 2500m2 increased 1 1500KN.m self lifting tower crane;The building cornice height is above 100m, the building area of each floor within 3500m2 with 1 2000KN.m self lifting tower crane, each increase of less than 3000m2 increased 1 2000KN.m Jack 1 cranes;When the eaves height more than 25m below the 100m, according to each self lifting tower crane with 1 single cage construction elevator, eaves height above 100m with 2 single cage construction elevator;The podium when every floor area is too large, in accordance with the above standard auxiliary tower crane.
Q:What are the working mechanisms and safety devices of tower cranes?
A safety device: four limit: height limit, amplitude limit, slewing limit, travel limit; three insurance: luffing rope insurance, car insurance broken shaft, the hook to prevent falling insurance; two limit: torque limiter, weight limiter on these roughly.
Q:What is an attached tower crane?
Attached tower crane is due to the height of the building is relatively high, a steel connection in order to strengthen the stability of tower crane between tower crane and tower crane building, this form is called the attached tower crane.
Q:How to fix the cable on the tower of QTZ125 type tower crane?
The main purpose is to prevent the main cable fixed tower crane tower crane cable weight lead cable pulled bad (insulation damage, core pulling) etc.,
Q:Examples of filling and acceptance forms for tower cranes and examples of filling in.
3 no or no inspection items are completed". In the absence of such or part of the sub - item, it shall be drawn on its serial number".
Q:Protective earthing resistance of tower crane
Q:What is the safe distance of a tower crane to the surrounding buildings?
It's 5 meters up and down. Outside the radius of rotation is 3 meters, such as QTZ5010, tower crane rotating radius type, 50 meters in diameter, one hundred meters outside the scope is safe
Q:What is a TQ80 tower crane?
The concrete transport vehicle can be used at the lower part of the tower of the large tower crane. The one we usually see at the construction site is.) TQ80 is a model of cranes.

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